/*
 * Copyright (C) 2011 by Fabien Barbero
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.flickr.api.photos;

import com.flickr.api.ServerResponse;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author Fabien Barbero
 */
@XmlRootElement(name="rsp")
public class PhotoContext extends ServerResponse {
    
    @XmlElement(name="prevphoto")
    private Photo prevPhoto;
    
    @XmlElement(name="nextphoto")
    private Photo nextPhoto;
    
    PhotoContext() {}

    /**
     * Get the next photo.
     * @return The next photo or null.
     */
    public Photo getNextPhoto() {
        if(nextPhoto == null || nextPhoto.getId().equals("0")) {
            return null;
        }
        return nextPhoto;
    }

    /**
     * Get the previous photo.
     * @return The previous photo or null.
     */
    public Photo getPreviousPhoto() {
        if(prevPhoto == null ||prevPhoto.getId().equals("0")) {
            return null;
        }
        return prevPhoto;
    }

    @Override
    public String toString() {
        return "Previous=" + getPreviousPhoto() + ", next=" + getNextPhoto();
    }
    
}
